Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Preparation of CuS Counter Electrodes Using Electroplating for Quantum Dot-sensitized Solar Cells

전기 도금 공정을 활용한 양자점 감응 태양전지 CuS 상대 전극 제작

  • SEUNG BEOM HA (Department of Chemical Engineering, Dankook University) ;
  • IN-HEE CHOI (Department of Chemical Engineering, Dankook University) ;
  • JAE-YUP KIM (Department of Chemical Engineering, Dankook University)
  • 하승범 (단국대학교 화학공학과) ;
  • 최인희 (단국대학교 화학공학과) ;
  • 김재엽 (단국대학교 화학공학과)
  • Received : 2023.12.12
  • Accepted : 2023.12.18
  • Published : 2023.12.30
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Abstract

Copper sulfide (CuxS) has been extensively utilized as a counter electrode (CE) material for quantum dot solar cells (QDSCs) due to its exceptional catalytic activity for polysulfide electrolytes. The typical fabrication method of Cu2S CEs based on brass substrate is dangerous, involving the use of a highly concentrated hydrochloric acid solution in a relatively high temperature. In contrast, electroplating presents a safer alternative by employing a less acidic solution at a room temperature. In addition, the electroplating method increases the probability of obtaining CEs of consistent quality compared to the brass method. In this study, the optimized electroplating cycle for CuS CEs in QDSCs has been studied for the highly efficient photovoltaic performances. The QDSCs, featuring electroplated CuS CEs, achieved an impressive efficiency of 7.18%, surpassing the conventional method employing brass CEs, which yielded an efficiency of 6.62%.

Keywords

References

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